Electric potential monitoring device used for plasmas in space environment

A plasma and monitoring device technology, applied in the field of space exploration, can solve the problems of damage to the safety of spacecraft and the impact of spacecraft, and achieve the effect of low scanning power consumption and improved detection accuracy

Active Publication Date: 2015-07-22
NAT SPACE SCI CENT CAS
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  • Application Information

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Problems solved by technology

These particles have a great influence on the spacecraft and can produce various effects that damage the safety of the spacecraft

Method used

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  • Electric potential monitoring device used for plasmas in space environment
  • Electric potential monitoring device used for plasmas in space environment

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Embodiment Construction

[0014] A device for monitoring plasma potential in a space environment according to the present invention will be described in detail below with reference to the drawings and embodiments.

[0015] A monitoring device for plasma potential in a space environment of the present invention includes: a plasma potential sensor, and an electronics box; wherein the electronics box includes: an analog signal processing circuit, a digital signal processing circuit, and a voltage scanning module;

[0016] The connection relationship is: because the sampling signal is weak, the plasma potential sensor is connected to the electronics box through a shielded cable, and the shielded cable transmits the signal detected by the plasma potential sensor to the electronics box for analog signal processing, and then converts the analog signal to It is a digital signal and transmitted to the microprocessor for storage and transmission.

[0017] The microprocessor sends a control signal to the DA so th...

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Abstract

The invention provides an electric potential monitoring device used for plasmas in a space environment. The electric potential monitoring device comprises an electric potential sensor, a microprocessor, a D / A (digital / analog) converter, an A / D (analog / digital) converter, a high voltage amplifier, a pre-amplifier and an isolation amplifier. The microprocessor is used for controlling the D / A converter to output scanning voltage. The high-voltage amplifier is used for performing high-voltage amplification on the scanning voltage and inputting the amplified scanning voltage into the electric potential sensor. The electric potential sensor is driven by the scanning voltage to detect electric potentials of the plasmas in the space environment, and generated current signals are input into the pre-amplifier and the isolation amplifier sequentially for pre-amplifier and isolation amplification sequentially and then output via the microprocessor after being subjected to analog-digital conversion. The electric potential monitoring device has the advantages that by means of high voltage amplification, the scanning voltage in a large range is provided, and plasma density in a large range can be measured, so that electric potentials of the plasmas in the space environment can be monitored effectively.

Description

technical field [0001] The invention relates to the technical field of space detection, in particular to a monitoring device for plasma potential in a space environment. Background technique [0002] A spacecraft operating in space is in a plasma environment surrounded by a large number of charged particles. These particles have a great influence on the spacecraft, can produce various effects, and damage the safety of the spacecraft. [0003] Early research in China did not pay much attention to the electrification effect of satellites. However, as the intensity of solar activity has increased in recent years and the space environment has become increasingly harsh, the damage to satellites from electrification effects has gradually increased, causing serious failures of many domestic satellites one after another. , according to the analysis are related to the charging effect. Contents of the invention [0004] The object of the present invention is to provide a monitorin...

Claims

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Application Information

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IPC IPC(8): G01R19/25
Inventor 翁成翰周斌
Owner NAT SPACE SCI CENT CAS
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